Life Zone Ecology of the Bhutan Himaraya III

不丹喜马拉雅III生命带生态

基本信息

项目摘要

Altitudinal patterns in clhimatologjcal, geomorphological, and ecological features of the Bhutanese life-zones were studied in a range of c. 1000-3500 m a.s.l. during 1999-2001. Temperature and moisture conditions were recorded in data loggers and obtained complete year round data from September 1999 to August 2001 along Tsang Chu. Temperature lapse rate was varied by the topographical situation of the measuring sites in a range of 0.57-0.62 C/100m. The lapse rate is larger in dry season (April) and smaller in monsoon rain season reflecting relative humidity. Mass movement is extremely active in the Bhutan Himalaya. Land slides took place by shearing on a bedding plane in the area underlain by metamorphic rocks. As the consequences river channels shift in the dip direction of the bedding plane and asymmetric valleys have developed. Vegetation zonation along altihidinal series were studied along Gasa series, Lobesa series, and Seagor-Lingmethang series. Gasa series mainly focused on topographical diversification within each life zone, Lobesa series had clear zonation from dry valley bottom to humid mountain cloud forests on ridges. From warm/dry Pinus roxburghii forests, mid-altitudinal Quercus griffithii/Q. lanata forests, Quercus glauca /Q. semecarpifolia forests, and Isuga dumosa forests and Abies densa forests above 2700 m. One third of the Bhutanese agricultural fields are maintained as shifting cultivation, and the sites are interesting for their secondary succession during fallow periods. There are two types of shifting cultivation in Bhutan, grass fallow (pangshing) of five year fallow and forest fallow (tseri) of 12 year fallow periods. For the former, we did in Bumthang, and for the latter in Shemgang, both place are the major area for both each types of shifting cultivation. In both sites we analyzed vegetation succession and soil developments, and found critical conditions for the sustainable managements for the system.
在一系列的c.海拔1000-3500米在1999-2001年期间。温度和湿度条件记录在数据记录器,并获得完整的全年数据,从1999年9月至2001年8月沿着Tsang Chu。温度递减率因测量地点的地形情况而异,范围为0.57-0.62 C/100 m。直减率在旱季(4月)较大,在季风雨季较小,反映了相对湿度。不丹喜马拉雅地区的群众运动极其活跃。滑坡是在变质岩下的层面上由于剪切作用而发生的。结果,河道在层面的倾斜方向上发生了变化,形成了不对称的河谷。研究了沿着Gasa系列、Lobesa系列和Seagor-Lingmethang系列的植被沿着海拔系列的地带性。Gasa系列主要表现为各生物带内地形的多样性,Lobesa系列从干燥的谷底到山脊上的湿润山地云雾林具有明显的分带性。从暖干型的福建省福建Lanata林、Quercus glauca /Q.海拔2700 m以上为半果林、铁杉林、冷杉林。不丹有三分之一的农田是轮垦的,在休耕期间,这些农田的二次演替很有意思。不丹的轮垦有两种类型,休耕期为5年的草地休耕和休耕期为12年的森林休耕。对于前者,我们在Bumthang做了,对于后者在Shemgang做了,这两个地方都是每种轮垦的主要地区。在这两个网站,我们分析了植被演替和土壤的发展,并找到了系统的可持续管理的关键条件。

项目成果

期刊论文数量(13)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Nitta, I, Ohsawa, M: "Geographical transition of sylleptic/proleptic branching in three Cinnamomum species with different bud types"Annals of Botany. 87. 35-45 (2001)
Nitta,I,Ohsawa,M:“具有不同芽类型的三种肉桂属植物中的 syleptic / proleptic 分支的地理转变”植物学年鉴。
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岡田光正・大沢雅彦・鈴木基之: "環境保全・創出のための生態工学"丸善. 238 (1999)
冈田光正、大泽雅彦、铃木元之:“环境保护和创造的生态工程”Maruzen 238 (1999)。
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Tang, C.Q., Ohsawa, M: "Coexistence mechanisms of evergreen, deciduous and coniferous trees in a mid-montane mixed forest on Mt. Emei, Sichuian, China"Plant Ecology. 161. 215-230 (2002)
Tang, C.Q., Ohsawa, M:“中国四川峨眉山中山混交林常绿、落叶和针叶树的共存机制”植物生态学。
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OHSAWA Masahiko其他文献

OHSAWA Masahiko的其他文献

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{{ truncateString('OHSAWA Masahiko', 18)}}的其他基金

Niche differentiation, morphological and phenological traits of trees in evergreen broad-leaved forests
常绿阔叶林树木生态位分化及形态物候特征
  • 批准号:
    10440229
  • 财政年份:
    1998
  • 资助金额:
    $ 10.18万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B).
Comparative Ecological Study on Subtropical Forest in Canary
加那利亚热带森林比较生态学研究
  • 批准号:
    09041146
  • 财政年份:
    1997
  • 资助金额:
    $ 10.18万
  • 项目类别:
    Grant-in-Aid for international Scientific Research
RESPONSES OF FOREST SYSTEMS TO CLIMATIC FLUCTUATIONS IN YAKUSHIMA ISLAND,SOUTHERN JAPAN
日本南部屋久岛森林系统对气候波动的响应
  • 批准号:
    06304003
  • 财政年份:
    1994
  • 资助金额:
    $ 10.18万
  • 项目类别:
    Grant-in-Aid for Co-operative Research (A)
Vegetation-environment pattern of evergreen broad-leaved forest
常绿阔叶林植被-环境格局
  • 批准号:
    05454007
  • 财政年份:
    1993
  • 资助金额:
    $ 10.18万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (B)
Differentiation of topo-communities along topographical gradients
拓扑群落沿地形梯度的分化
  • 批准号:
    02640503
  • 财政年份:
    1990
  • 资助金额:
    $ 10.18万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
Life Zone Ecology of The Bhutan Himalaya II.
不丹喜马拉雅山生命带生态学II。
  • 批准号:
    01041014
  • 财政年份:
    1989
  • 资助金额:
    $ 10.18万
  • 项目类别:
    Grant-in-Aid for international Scientific Research

相似海外基金

Life Zone Ecology of The Bhutan Himalaya II.
不丹喜马拉雅山生命带生态学II。
  • 批准号:
    01041014
  • 财政年份:
    1989
  • 资助金额:
    $ 10.18万
  • 项目类别:
    Grant-in-Aid for international Scientific Research
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